Preheat oven to 350 F. Butter a 9 x 5 inch loaf pan. Combine sugar
and oil and beat well. Add eggs, one at a time, and beat until
mixture is smooth and creamy. In a bowl sift together flour, baking
soda, salt, cinnamon and nutmeg. Stir in instant coffee. Stir flour
mixture into egg mixture alternately with water. Stir in sweet
potatoes and chopped nuts. Pour batter into greased 9 x 5 inch loaf
pan. Bake at 350¼F for about one hour or until cake tester comes out
clean. Cool in pan on wire rack. Remove from pan when cool.